State whether the equation is a linear equation in one variable or not. –2x(–2 – x) = x + 1

Answers

Answer 1

Answer: If you'll simplify this equation -2x(-2-x)=x+1
you'll get 4x+2x²=x+1
simplify further 2x²+3x-1
this one looks like a quadratic equation.
Thus, this is not a linear equation,

Answer 2

Answer: $-2x(-2 -x) = x + 1\n 4x+2x^2=x+1$

It's not linear. It's quadratic.

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A 2-column table has 4 rows. The first column is labeled x with entries 1, 2, 3, 4. The second column is labeled y with entries 4.5, 6.75, 10.125, 15.1875.What is the multiplicative rate of change of the exponential function represented in the table?

1.5
2.25
3.0
4.5

Answers

The rate of change for the given function is 2.25. Therefore, option B is the correct answer.

What is rate of change of a function?

The rate of change, or the slope, is calculated as Δy/Δx , or (y2−y1)/(x2−x1). The slope-intercept equation of a line is y=mx+b , where m is the slope and b is the initial value.

From the given table, we have (1, 4.5), (2, 6.75), (3, 10.125) and (4, 15.1875).

Using coordinate points (1, 4.5) and (2, 6.75), we get

Rate of change = (6.75-4.5)/(2-1)

= 2.25

Therefore, option B is the correct answer.

Learn more about the rate of change here:

brainly.com/question/8223651.

#SPJ6

Answer:

its 3.0

Step-by-step explanation:

ik bc i took the test

You are going to college in the fall. You have just heard from your roommate and he asks you to bring the stereo system for the dorm room. You find the perfect system for $1750. You have to put 25% down and you can pay the balance in 18 equal installments. The clerk tells you that you will pay a total finance charge of $112. How much is the down payment and what is the total amount financed including the finance charge? a. $437.50; $1424.50 b. $437.50; $1312.50 c. $43.75; $1818.25 d. $43.75; $1706.25

Answers

Answer:

Option a. is the correct answer.

Step-by-step explanation:

The cost of stereo system = $1,750.00

You have to put down payment = 25% of 1750

= 0.25 × 1750 = $437.50

therefore the balance amount for installments = 1,750 - 437.50 = $1,312.50

Now clerk tells you that you will pay a total finance charge = $112.00

so it would be added to balance amount

= 1,312.50 + 112.00 = $1,424.50

So the down payment would be $437.50 and total amount financed incuding the finance charge would be $1,424.50.

B. hope this helps! If you have any questions regarding the answer i gave you please let me know!

Slope of (9,3) (19,-17) using slope formula

Answers

I got m= -2

If that’s not right I’m sorry. But I’m sure it is :)

The curve through the ordered pairs (0, 10), (1, 5), and (2, 2.5) can be represented by the function f(x) = 10(0.5)x. What is the multiplicative rate of change of the function?A.0.5
B.2
C.2.5
D.5

Answers

y=mx+b
trial and error tells us
f(x)=-0.25x+10 (the given equation doesn't give the correct starting value)

rate of change is -0.25

Answer:

0.5

Step-by-step explanation:

Hope this helps

If p varies directly with q, and p = 8 when q = 2, what is the value of p when q = 7?A.p = 1

B.p = 100

C.p = 40

D.p = 28

Answers

D.p. 28 I'm guessing?

the answer to this question is p=28

A restaurant chef ordered 4 pounds of beef at $3.25 per pound, 6 pounds of potatoes at $1.96 a pound, and 5 pounds of carrots at $1.81 per pound. He estimates that this will make 28 meals. If he charges $20 per meal, how much profit will he make for each meal?